Analog Devices Inc. LTC6652BHLS8-4.096

Overview

LTC6652BHLS8-4.096 from Analog Devices (formerly Linear Technology) is a precision buffered voltage reference IC delivering a stable 4.096V output with ±0.1% initial accuracy, 8ppm/°C max temperature drift (LS8 package), and 2.3ppm_P-P low-frequency noise (0.1Hz–10Hz). It operates from 4.396V to 13.2V supply, sinks/sources ±5mA, and features shutdown mode (<2µA). It is used in high-resolution ADC/DAC biasing, industrial sensor signal chains, and automotive data acquisition systems requiring long-term stability at extended temperatures.

For engineers reviewing the LTC6652BHLS8-4.096 datasheet, LTC6652BHLS8-4.096 pinout, LTC6652BHLS8-4.096 application, or LTC6652BHLS8-4.096 equivalent, key selection criteria include LS8 hermetic package stability, –40°C to 125°C operation, thermal hysteresis (45ppm), long-term drift (20ppm/√kHr), and load regulation performance under sourcing/sinking conditions.

Technical Context

The LTC6652BHLS8-4.096 employs high-order curvature-compensated bandgap architecture to achieve predictable, low-drift behavior across its full operating range. Its internal buffered output enables ±5mA drive capability without external amplification while maintaining low output impedance and excellent line/load regulation.

It integrates an active-low shutdown input (SHDN) that reduces quiescent current to <2µA and places VOUT in high-impedance state (≈20kΩ × 4.096V ≈ 82kΩ). The LS8 5mm × 5mm ceramic LCC package provides hermetic sealing, eliminating humidity-induced drift and enabling superior long-term stability versus plastic MSOP variants.

Key Specifications

Pinout & Package

The LTC6652BHLS8-4.096 is housed in an 8-lead ceramic LCC (LS8) package: 5mm × 5mm surface-mount, hermetically sealed, leadless chip carrier with exposed pad grounded internally. This package delivers superior thermal and humidity stability versus plastic MSOP alternatives.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Compared with REF5040IDR and ADR4540BRZ, the LTC6652BHLS8-4.096 uniquely combines hermetic LS8 stability, ±5mA bidirectional drive, and sub-2µA shutdown - making it the only option qualified for automotive BMS and high-reliability industrial field instruments where thermal cycling, humidity, and power gating are mandatory.

Availability

LTC6652BHLS8-4.096 is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial 4–20mA transmitters, and portable medical ECG front-ends requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LTC6652BHLS8-4.096 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC6652 family was designed by ADI's former Linear Technology division specifically for precision voltage reference applications demanding low drift, low noise, and robust operation from –40°C to 125°C in harsh environments.

FAQ

What is the maximum allowable input voltage for the LTC6652BHLS8-4.096?

The LTC6652BHLS8-4.096 supports an absolute maximum input voltage of 13.2V relative to GND. Operation above this level risks permanent damage. For reliable long-term performance, VIN should be maintained between 4.396V (VOUT + 300mV) and 13.2V, with 0.1µF local bypassing recommended to maintain PSRR above 60dB at 10kHz.

Does the LTC6652BHLS8-4.096 require an output capacitor for stability?

No, the LTC6652BHLS8-4.096 is unconditionally stable without an output capacitor. However, adding 0.1µF–10µF improves transient response under load steps and reduces high-frequency noise coupling. The LS8 package's low parasitic inductance makes it especially tolerant of capacitive loading - unlike many references, no minimum COUT is mandated.

How does the shutdown mode affect the output voltage of the LTC6652BHLS8-4.096?

In shutdown mode (SHDN < 0.8V), the LTC6652BHLS8-4.096 disables its internal regulator and presents a high-impedance output ≈20kΩ × 4.096V = 82kΩ. The output voltage floats near 0V but is not actively driven - external pull-downs may be needed for defined logic levels in microcontroller interfaces.

What is the thermal hysteresis specification for the LTC6652BHLS8-4.096, and why does it matter?

The LTC6652BHLS8-4.096 exhibits 45ppm thermal hysteresis over –40°C to 125°C cycling, measured as output deviation at 25°C before and after extreme temperature exposure. This matters because hysteresis introduces non-repeatable error in systems undergoing frequent thermal cycling - such as automotive ECUs - and the LS8's hermetic construction minimizes this effect versus plastic-packaged alternatives.

Can the LTC6652BHLS8-4.096 sink and source 5mA simultaneously?

No - the LTC6652BHLS8-4.096 is specified for ±5mA total output current: it can source up to +5mA or sink up to –5mA, but not both simultaneously. Its output stage is a single-ended buffered amplifier; simultaneous sourcing and sinking would require a dual-rail configuration not supported by this device.